NEET

In a biosphere reserve, limited human activity is permitted in

Core zone
Buffer zone
Manipulation zone
Noneof these

Solution

A biosphere reserve is basically divided into three zones.
1. Core zone – It lies at centre where no human activity is allowed.
2. Buffer zone – In this zone limited human activities are allowed.
3. Manipulative zone – It this zone multiple human activities are allowed.

The most important human activity leading to extinction of wildlife is

Alteration and destruction of the natural habitats
Hunting for commercially valuable wild life products
Pollution of air and water
Introduction of alien species

Solution

Habitat alteration and destruction of the natural habitat causes the destruction of breeding grounds, shelter and sources of food.

Ecological diversity includes

Species diversity
Genetic diversity
Ecosystem diversity
All of these

Which of the following represents the biodiversity of an area?

Gene
Species
Ecosystem
All of these

Biodiversity of a geographical region represents

endangered species found in the region.
the diversity in the organisms living in the region.
genetic diversity present in the dominant species of the region.
species endemic to the region.

Solution

Biodiversity is the number of variety of organism found within a specified geographic region.

The biodiversity is the study of diversity

Below species level
At species level
At community level
At all levels of biological organization

Following arrangement is correct from the point of view of decreasing biodiversity in angiosperms (N), fungi (F), pteridophytes (P) and algae (A)

N > F > P > A
N > F > A > P
F > N > P > A
F > N > A > P

The number of plant species recorded from India, is

30,000
45,000
70,000
90,000

Species diversity increase as one proceeeds from

high altitude to low altitude and high latitude to low latitude
low altitude to high altitude and high latitude to low latitude
low altitude to high altitude and low latitude to high latitude
high altitude to low altitude and low latitude to high latitude

The maximum number of species have extincted from

Islands
Mainland
Oceans
Fresh water bodies

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